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Which of the following type of corrosion is localized in nature?(a) Crevice corrosion(b) Galvanic corrosion(c) Uniform corrosion(d) Inter-granular corrosionI have been asked this question in unit test.I would like to ask this question from Eight Forms in section Eight Forms of Corrosion of Corrosion Engineering

Answer»

Correct option is (a) Crevice corrosion

The best I can explain: Crevice corrosion is localized corrosion because it OCCURS only at discrete sites on the metal surface.This occurs due to the presence of a stagnant SOLUTION in crevices (small spaces). This crevice CORRODES RAPIDLY by cathodically protecting adjacent surfaces.



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